Test Considerations
For optimum performance, all verification and calibration procedures should comply with the
following:
l Ambient temperature is stable, between 18 and 28 °C.
l Ambient relative humidity is less than 80%.
l 30 minute warm-up period before verification or adjustment.
l Cables as short as possible, twisted or shielded to reduce noise.
Calibration Procedure
Enter Calibration Mode
Front Panel Menu Reference SCPI Command
Select System\Admin\Login.
Enter your password in the Password field. Then press Select.
CAL:STAT ON <password>
Voltage Calibration
Voltage Programming and Measurement
Step 1. Connect the voltage input of the Keysight 3458A DMM to the output (see Cal Setup A).
Step 2. Select the voltage programing and measurement calibration.
Front Panel Menu Reference SCPI Command
Select System\Admin\Cal\Vprog.
Check that the voltmeter is connected and select Next.
Specify the full-scale voltage range. Full scale
ranges vary by model. This selects the 500 V range:
CAL:VOLT 500
Step 3. Select the first voltage calibration point. Measure the output voltage with the DMM and enter
the data.
Front Panel Menu Reference SCPI Command
Display shows: “Enter P1 measured data”.Enter the data
from the external DMM.Press Enter when done.
CAL:LEV P1
*OPC?
CAL:DATA <data>
The next step applies the full output voltage of the unit under test to the output.
Step 4. Select the second voltage calibration point. Measure the output voltage with the DMM and
enter the data.
Keysight RP7900 Series Operating and Service Guide 275
6 Verification and Calibration
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